Enter MRMDRMD as a password. Stamina restore will no longer be available.

New Nexus outfit for Donatello

Enter DSLRDRM as a password.

New Nexus outfit for Leonardo

Enter LMRMDRD as a password.

New Nexus outfit for Michelangelo

Enter MLMRDRM as a password.

New Nexus outfit for Raphael

Enter RMSRMDR as a password.

Playmates unlocked in bonus materials

Enter SRMLDDR as a password.

Play as Casey Jones

Win the Open Brawl Tournament. Alternately, Casey Jones is unlocked five days after a saved game file is created; you can change the system date to do this. Casey Jones replaces Raphael.

Play as Karai

Defeat Karai in the Foot Fight Tournament in less than 150 seconds. Alternately, Karai is unlocked thirty five days after a saved game file is created; you can change the system date to do this. Karai replaces Michaelangelo.

Play as Slashuur

Win the Battle Nexus Tournament. Alternately, Slashuur is unlocked forty five days after a saved game file is created; you can change the system date to do this. Slashuur replaces Leonardo.

Play as Splinter

Successfully complete level 11-7. Alternately, Splinter is unlocked ten days after a saved game file is created; you can change the system date to do this. Splinter replaces Donatello.

Teenage Mutant Ninja Turtles arcade game

Got to level 9-1 and get the hidden Antique. Do this by going down one of the alleyways. There will be a pile of crates and a broken down bus. Jump on the crate and onto the bus. From the bus, jump onto the building . There should be two crates here, containing Pizza and the Antique. Then, complete the level and defeat all the Purple Dragons, Foot, and Mobsters. Next, go to the " 2nd Time Around". If you look through the different objects in the "NY" section, you will see the image of an arcade. Select the arcade to see information on it. When you exit out of the information, the message "Classic Arcade Mode Unlocked" will appear, and that option is now on the main menu at the title screen. Note: Do not worry if the screen remains black, or the arcade main screen takes a long time to load; this is normal.

In the arcade game, the joystick and certain buttons including the pause feature do not work. The character selection is just like the arcade. Each controller controls a different turtle. You cannot choose which turtle to assign to a controller. Controller one is Leonardo, controller two is Michaelangelo, controller three is Donatello, and Controller four is Raphael.